mirror of https://github.com/tailscale/tailscale/
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
530 lines
13 KiB
Go
530 lines
13 KiB
Go
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package dns
|
|
|
|
import (
|
|
"net/netip"
|
|
"runtime"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/google/go-cmp/cmp"
|
|
"github.com/google/go-cmp/cmp/cmpopts"
|
|
"tailscale.com/net/dns/resolver"
|
|
"tailscale.com/net/netaddr"
|
|
"tailscale.com/net/tsdial"
|
|
"tailscale.com/types/dnstype"
|
|
"tailscale.com/util/dnsname"
|
|
)
|
|
|
|
type fakeOSConfigurator struct {
|
|
SplitDNS bool
|
|
BaseConfig OSConfig
|
|
|
|
OSConfig OSConfig
|
|
ResolverConfig resolver.Config
|
|
}
|
|
|
|
func (c *fakeOSConfigurator) SetDNS(cfg OSConfig) error {
|
|
if !c.SplitDNS && len(cfg.MatchDomains) > 0 {
|
|
panic("split DNS config passed to non-split OSConfigurator")
|
|
}
|
|
c.OSConfig = cfg
|
|
return nil
|
|
}
|
|
|
|
func (c *fakeOSConfigurator) SetResolver(cfg resolver.Config) {
|
|
c.ResolverConfig = cfg
|
|
}
|
|
|
|
func (c *fakeOSConfigurator) SupportsSplitDNS() bool {
|
|
return c.SplitDNS
|
|
}
|
|
|
|
func (c *fakeOSConfigurator) GetBaseConfig() (OSConfig, error) {
|
|
return c.BaseConfig, nil
|
|
}
|
|
|
|
func (c *fakeOSConfigurator) Close() error { return nil }
|
|
|
|
func TestManager(t *testing.T) {
|
|
if runtime.GOOS == "windows" {
|
|
t.Skipf("test's assumptions break because of https://github.com/tailscale/corp/issues/1662")
|
|
}
|
|
|
|
// Note: these tests assume that it's safe to switch the
|
|
// OSConfigurator's split-dns support on and off between Set
|
|
// calls. Empirically this is currently true, because we reprobe
|
|
// the support every time we generate configs. It would be
|
|
// reasonable to make this unsupported as well, in which case
|
|
// these tests will need tweaking.
|
|
tests := []struct {
|
|
name string
|
|
in Config
|
|
split bool
|
|
bs OSConfig
|
|
os OSConfig
|
|
rs resolver.Config
|
|
}{
|
|
{
|
|
name: "empty",
|
|
},
|
|
{
|
|
name: "search-only",
|
|
in: Config{
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
os: OSConfig{
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
},
|
|
{
|
|
// Regression test for https://github.com/tailscale/tailscale/issues/1886
|
|
name: "hosts-only",
|
|
in: Config{
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
},
|
|
rs: resolver.Config{
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
},
|
|
},
|
|
{
|
|
name: "corp",
|
|
in: Config{
|
|
DefaultResolvers: mustRes("1.1.1.1", "9.9.9.9"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("1.1.1.1", "9.9.9.9"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
},
|
|
{
|
|
name: "corp-split",
|
|
in: Config{
|
|
DefaultResolvers: mustRes("1.1.1.1", "9.9.9.9"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
split: true,
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("1.1.1.1", "9.9.9.9"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
},
|
|
{
|
|
name: "corp-magic",
|
|
in: Config{
|
|
DefaultResolvers: mustRes("1.1.1.1", "9.9.9.9"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
Routes: upstreams("ts.com", ""),
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
},
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("100.100.100.100"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
rs: resolver.Config{
|
|
Routes: upstreams(".", "1.1.1.1", "9.9.9.9"),
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
LocalDomains: fqdns("ts.com."),
|
|
},
|
|
},
|
|
{
|
|
name: "corp-magic-split",
|
|
in: Config{
|
|
DefaultResolvers: mustRes("1.1.1.1", "9.9.9.9"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
Routes: upstreams("ts.com", ""),
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
},
|
|
split: true,
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("100.100.100.100"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
rs: resolver.Config{
|
|
Routes: upstreams(".", "1.1.1.1", "9.9.9.9"),
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
LocalDomains: fqdns("ts.com."),
|
|
},
|
|
},
|
|
{
|
|
name: "corp-routes",
|
|
in: Config{
|
|
DefaultResolvers: mustRes("1.1.1.1", "9.9.9.9"),
|
|
Routes: upstreams("corp.com", "2.2.2.2"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("100.100.100.100"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
rs: resolver.Config{
|
|
Routes: upstreams(
|
|
".", "1.1.1.1", "9.9.9.9",
|
|
"corp.com.", "2.2.2.2"),
|
|
},
|
|
},
|
|
{
|
|
name: "corp-routes-split",
|
|
in: Config{
|
|
DefaultResolvers: mustRes("1.1.1.1", "9.9.9.9"),
|
|
Routes: upstreams("corp.com", "2.2.2.2"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
split: true,
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("100.100.100.100"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
rs: resolver.Config{
|
|
Routes: upstreams(
|
|
".", "1.1.1.1", "9.9.9.9",
|
|
"corp.com.", "2.2.2.2"),
|
|
},
|
|
},
|
|
{
|
|
name: "routes",
|
|
in: Config{
|
|
Routes: upstreams("corp.com", "2.2.2.2"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
bs: OSConfig{
|
|
Nameservers: mustIPs("8.8.8.8"),
|
|
SearchDomains: fqdns("coffee.shop"),
|
|
},
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("100.100.100.100"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf", "coffee.shop"),
|
|
},
|
|
rs: resolver.Config{
|
|
Routes: upstreams(
|
|
".", "8.8.8.8",
|
|
"corp.com.", "2.2.2.2"),
|
|
},
|
|
},
|
|
{
|
|
name: "routes-split",
|
|
in: Config{
|
|
Routes: upstreams("corp.com", "2.2.2.2"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
split: true,
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("2.2.2.2"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
MatchDomains: fqdns("corp.com"),
|
|
},
|
|
},
|
|
{
|
|
name: "routes-multi",
|
|
in: Config{
|
|
Routes: upstreams(
|
|
"corp.com", "2.2.2.2",
|
|
"bigco.net", "3.3.3.3"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
bs: OSConfig{
|
|
Nameservers: mustIPs("8.8.8.8"),
|
|
SearchDomains: fqdns("coffee.shop"),
|
|
},
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("100.100.100.100"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf", "coffee.shop"),
|
|
},
|
|
rs: resolver.Config{
|
|
Routes: upstreams(
|
|
".", "8.8.8.8",
|
|
"corp.com.", "2.2.2.2",
|
|
"bigco.net.", "3.3.3.3"),
|
|
},
|
|
},
|
|
{
|
|
name: "routes-multi-split",
|
|
in: Config{
|
|
Routes: upstreams(
|
|
"corp.com", "2.2.2.2",
|
|
"bigco.net", "3.3.3.3"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
split: true,
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("100.100.100.100"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
MatchDomains: fqdns("bigco.net", "corp.com"),
|
|
},
|
|
rs: resolver.Config{
|
|
Routes: upstreams(
|
|
"corp.com.", "2.2.2.2",
|
|
"bigco.net.", "3.3.3.3"),
|
|
},
|
|
},
|
|
{
|
|
name: "magic",
|
|
in: Config{
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
Routes: upstreams("ts.com", ""),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
bs: OSConfig{
|
|
Nameservers: mustIPs("8.8.8.8"),
|
|
SearchDomains: fqdns("coffee.shop"),
|
|
},
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("100.100.100.100"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf", "coffee.shop"),
|
|
},
|
|
rs: resolver.Config{
|
|
Routes: upstreams(".", "8.8.8.8"),
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
LocalDomains: fqdns("ts.com."),
|
|
},
|
|
},
|
|
{
|
|
name: "magic-split",
|
|
in: Config{
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
Routes: upstreams("ts.com", ""),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
split: true,
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("100.100.100.100"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
MatchDomains: fqdns("ts.com"),
|
|
},
|
|
rs: resolver.Config{
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
LocalDomains: fqdns("ts.com."),
|
|
},
|
|
},
|
|
{
|
|
name: "routes-magic",
|
|
in: Config{
|
|
Routes: upstreams("corp.com", "2.2.2.2", "ts.com", ""),
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
bs: OSConfig{
|
|
Nameservers: mustIPs("8.8.8.8"),
|
|
SearchDomains: fqdns("coffee.shop"),
|
|
},
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("100.100.100.100"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf", "coffee.shop"),
|
|
},
|
|
rs: resolver.Config{
|
|
Routes: upstreams(
|
|
"corp.com.", "2.2.2.2",
|
|
".", "8.8.8.8"),
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
LocalDomains: fqdns("ts.com."),
|
|
},
|
|
},
|
|
{
|
|
name: "routes-magic-split",
|
|
in: Config{
|
|
Routes: upstreams(
|
|
"corp.com", "2.2.2.2",
|
|
"ts.com", ""),
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
split: true,
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("100.100.100.100"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
MatchDomains: fqdns("corp.com", "ts.com"),
|
|
},
|
|
rs: resolver.Config{
|
|
Routes: upstreams("corp.com.", "2.2.2.2"),
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
LocalDomains: fqdns("ts.com."),
|
|
},
|
|
},
|
|
{
|
|
name: "exit-node-forward",
|
|
in: Config{
|
|
DefaultResolvers: mustRes("http://[fd7a:115c:a1e0:ab12:4843:cd96:6245:7a66]:2982/doh"),
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
os: OSConfig{
|
|
Nameservers: mustIPs("100.100.100.100"),
|
|
SearchDomains: fqdns("tailscale.com", "universe.tf"),
|
|
},
|
|
rs: resolver.Config{
|
|
Routes: upstreams(".", "http://[fd7a:115c:a1e0:ab12:4843:cd96:6245:7a66]:2982/doh"),
|
|
Hosts: hosts(
|
|
"dave.ts.com.", "1.2.3.4",
|
|
"bradfitz.ts.com.", "2.3.4.5"),
|
|
},
|
|
},
|
|
}
|
|
|
|
trIP := cmp.Transformer("ipStr", func(ip netaddr.IP) string { return ip.String() })
|
|
trIPPort := cmp.Transformer("ippStr", func(ipp netaddr.IPPort) string {
|
|
if ipp.Port() == 53 {
|
|
return ipp.Addr().String()
|
|
}
|
|
return ipp.String()
|
|
})
|
|
|
|
for _, test := range tests {
|
|
t.Run(test.name, func(t *testing.T) {
|
|
f := fakeOSConfigurator{
|
|
SplitDNS: test.split,
|
|
BaseConfig: test.bs,
|
|
}
|
|
m := NewManager(t.Logf, &f, nil, new(tsdial.Dialer), nil)
|
|
m.resolver.TestOnlySetHook(f.SetResolver)
|
|
|
|
if err := m.Set(test.in); err != nil {
|
|
t.Fatalf("m.Set: %v", err)
|
|
}
|
|
if diff := cmp.Diff(f.OSConfig, test.os, trIP, trIPPort, cmpopts.EquateEmpty()); diff != "" {
|
|
t.Errorf("wrong OSConfig (-got+want)\n%s", diff)
|
|
}
|
|
if diff := cmp.Diff(f.ResolverConfig, test.rs, trIP, trIPPort, cmpopts.EquateEmpty()); diff != "" {
|
|
t.Errorf("wrong resolver.Config (-got+want)\n%s", diff)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func mustIPs(strs ...string) (ret []netaddr.IP) {
|
|
for _, s := range strs {
|
|
ret = append(ret, netip.MustParseAddr(s))
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func mustIPPs(strs ...string) (ret []netaddr.IPPort) {
|
|
for _, s := range strs {
|
|
ret = append(ret, netip.MustParseAddrPort(s))
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func mustRes(strs ...string) (ret []*dnstype.Resolver) {
|
|
for _, s := range strs {
|
|
ret = append(ret, &dnstype.Resolver{Addr: s})
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func fqdns(strs ...string) (ret []dnsname.FQDN) {
|
|
for _, s := range strs {
|
|
fqdn, err := dnsname.ToFQDN(s)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
ret = append(ret, fqdn)
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func hosts(strs ...string) (ret map[dnsname.FQDN][]netaddr.IP) {
|
|
var key dnsname.FQDN
|
|
ret = map[dnsname.FQDN][]netaddr.IP{}
|
|
for _, s := range strs {
|
|
if ip, err := netip.ParseAddr(s); err == nil {
|
|
if key == "" {
|
|
panic("IP provided before name")
|
|
}
|
|
ret[key] = append(ret[key], ip)
|
|
} else {
|
|
fqdn, err := dnsname.ToFQDN(s)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
key = fqdn
|
|
}
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func hostsR(strs ...string) (ret map[dnsname.FQDN][]dnstype.Resolver) {
|
|
var key dnsname.FQDN
|
|
ret = map[dnsname.FQDN][]dnstype.Resolver{}
|
|
for _, s := range strs {
|
|
if ip, err := netip.ParseAddr(s); err == nil {
|
|
if key == "" {
|
|
panic("IP provided before name")
|
|
}
|
|
ret[key] = append(ret[key], dnstype.Resolver{Addr: ip.String()})
|
|
} else {
|
|
fqdn, err := dnsname.ToFQDN(s)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
key = fqdn
|
|
}
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func upstreams(strs ...string) (ret map[dnsname.FQDN][]*dnstype.Resolver) {
|
|
var key dnsname.FQDN
|
|
ret = map[dnsname.FQDN][]*dnstype.Resolver{}
|
|
for _, s := range strs {
|
|
if s == "" {
|
|
if key == "" {
|
|
panic("IPPort provided before suffix")
|
|
}
|
|
ret[key] = nil
|
|
} else if ipp, err := netip.ParseAddrPort(s); err == nil {
|
|
if key == "" {
|
|
panic("IPPort provided before suffix")
|
|
}
|
|
ret[key] = append(ret[key], &dnstype.Resolver{Addr: ipp.String()})
|
|
} else if _, err := netip.ParseAddr(s); err == nil {
|
|
if key == "" {
|
|
panic("IPPort provided before suffix")
|
|
}
|
|
ret[key] = append(ret[key], &dnstype.Resolver{Addr: s})
|
|
} else if strings.HasPrefix(s, "http") {
|
|
ret[key] = append(ret[key], &dnstype.Resolver{Addr: s})
|
|
} else {
|
|
fqdn, err := dnsname.ToFQDN(s)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
key = fqdn
|
|
}
|
|
}
|
|
return ret
|
|
}
|